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Finding the Fourth Proportional to 376.70, 564.78 and 133.16

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Solution

The fourth proportional to 376.70, 564.78 and 133.16 is: 199.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.70 : 564.78 = 133.16 : x
  2. Step 2: Convert to fraction form
    376.70/564.78 = 133.16/x
  3. Step 3: Cross multiply
    376.70x = 564.78 × 133.16
  4. Step 4: Simplify right side
    376.70x = 75,206.10
  5. Step 5: Solve for x
    x = 75,206.10/376.70
  6. Step 6: Final answer
    x = 199.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.